Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d78d9809a5e781f…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 17:41:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fb1b379227966f51c322f18cce01afd7 SHA-1: 7f60147b737b57a941fd6283c1bd5004ce1198f5 SHA-256: 4d78d9809a5e781fbd4e2f63435ff594f0cab496d83fbf3249ae30d5d9729d2e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or human verification prompt to trick the user into clicking a malicious link. The embedded URL, https://netcdn.online/app/431946152/ho-to-get-free-robux-in-roblox-game-hack, is likely intended to lead to a further exploit or malware download. The document body and numerous other URLs reinforce the theme of obtaining free game currency or items, a common lure for phishing and malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/431946152/ho-to-get-free-robux-in-roblox-game-hack
    • http://library.stieyapan.ac.id//repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
    • http://library.stieyapan.ac.id/repository/multiplayer-master-hack-coins_GM406889139.pdf
    • http://library.stieyapan.ac.id//repository/claim-roblox_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/coin-master-spin-link-hack_GM406889139.pdf
    • http://library.stieyapan.ac.id//repository/promo-codes-to-get-free-robux_GM431946152.pdf
    • http://library.stieyapan.ac.id//repository/doctor-louie-roblox_GM431946152.pdf
    • http://library.stieyapan.ac.id//repository/minecraft-games-online-free-no-download_GM479516143.pdf
    • http://library.stieyapan.ac.id/repository/free-spins-coin-master-haktuts_GM406889139.pdf
    • http://library.stieyapan.ac.id//repository/you-promised-my-son-free-robux_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/free-spins-coin-master-october-17-2021_GM406889139.pdf
    • http://library.stieyapan.ac.id/repository/how-to-get-free-robux-hack_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdf
    • http://library.stieyapan.ac.id/repository/what-are-points-for-in-roblox_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/free-daily-spins-and-coins-for-coin-master_GM406889139.pdf
    • http://library.stieyapan.ac.id/repository/rbx-free-robux_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/free-minecraft-generator_GM479516143.pdf
    • http://library.stieyapan.ac.id//repository/wurst-client_GM479516143.pdf
    • http://library.stieyapan.ac.id/repository/block-best-robux_GM431946152.pdf
    • http://library.stieyapan.ac.id/repository/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdf
    • http://library.stieyapan.ac.id//repository/easy-points-gg_GM431946152.pdf
    • https://rblx.land
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005160.bin
858a612a799838b7427c50419eb740f7437784973b6dfeab577ebc63acff5034		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5160 25408 bytes
font_01_sfnt_off00008c8c.bin
52fda1c49622cc54cef671a6f045aae3091740b69e66917c3439b4e05cedf2e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8C 18192 bytes

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